A section through the urogenital groove and fold and L-3 spinal ganglion.

Observe:1. The three cartilagenous precursors of the pelvic bone; ilium, ischium and pubis.2. The near junction of the mesonephric ducts with the urethra.3. The fused female ducts in the midline.4. The rectovesicle pouch of the peritoneal cavity.5. The ganglion cells of the pelvic plexus lateral to the pelvic viscera.